Evaluation of Clipped-OFDM and SC/FDE Alternatives for Block Transmission Using Iterative Receiver Techniques

— A CP-assisted (Cyclic Prefix) block transmission is widely accepted as a good choice for future mobile systems, taking advantage of low-cost, flexible, FFT-based (Fast Fourier Transform) signal processing technology with both OFDM (Orthogonal Frequency Division Multiplexing) and SC (Single Carrier) alternatives. The OFDM alternative provides a simple receiver implementation which allows good performances, by exploiting the channel coding effort, but is known to suffer from a high PMEPR (Peak-to-Mean Envelope Power Ratio), leading to power amplification difficulties. The SC/FDE (Frequency-Domain Equalization) alternative is easily compatible with low PMEPR values, but the FDE (MMSE) receiver performance is known to be far from the optimum. In this paper, we consider a reduced-PMEPR, ClippedOFDM transmission , where an advanced receiver performs the iterative cancellation of the deliberate nonlinear distortion effects. In parallel, we consider an advanced Turbo FDE receiver, as w...

• Type: Conference
• Year: 2007
• Where: ICC
• Authors: Paulo Torres, António Gusmão
• Keywords: Communications, FDE Receiver, ICC 2007, Receiver Implementations, Simple Receiver Implementation